Scooper ‘Alexander’ has an interesting bit from “The Prestige” set:
For the past week, I served as a grip on the set of “The Prestige,” and I can tell you that during the lunch break each day Nolan, Bale and Caine have what we refer to on the set as the Batman meetings, where they sit under at a table under a tent away from everyone and discuss the coming abouts of the sequel. While everyone is to keep away from the area, we do find ways to sneak by. And I would just like to point out I have heard the names Paul Bettany followed by Joker and Jake Gyllenhaal followed by Dent. Just thought I’d send that your way, cheers.
Source: Alexander
